SCREEN PRINTER

摘要

A photoelectric sensor 60 and squeegees 32 and 42 are fixed to a slider, when outward movement printing in which solder on a screen S is rolled by an outward movement of the right squeegee 32 is completed, the right squeegee 32 is separated from a state of contacting a right end R1 of a solder roll and a squeegee position p1 at that time is input, and, subsequently, the slider is returned until the photoelectric sensor 60 detects a left end R2 of the solder roll and a squeegee position p2 at this time is input. An amount (a solder roll width R) of solder remaining on the screen S is calculated by subtracting a movement amount S from the squeegee position p1 to the squeegee position p2 from a distance X from the right squeegee 32 to an optical axis position of the photoelectric sensor 60 on the screen S.